Pretty hard to say without any information on the actual firewalls configurations.
Would it be possible to attach those (remove any sensitive information first)
Thought it seems that the ASA just isn't responding so its something related to connectivity OR maybe some missing VPN configurations (I'm personally not sure what kind of situations fall under that error message)
BenefitsDocumentationPrerequisiteImage Download LinksLimitationsSupported PlatformsLicense RequirementsTopologyStep-By-Step ConfigurationConfigure Virtual ServiceActivate the virtual service and configure guest IPsConfiguring UTD (Service Plane)Configurin...
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...